Add Spoiler Flag with veil, AP content-warning encoding, and full-stack plumbing

Authors can flag a review's comment as containing spoilers; the comment is
blurred behind a reveal control for every viewer except the author, omitted
from RSS, and federates as containsSpoilers plus an AP summary content
warning (ADR-0011) so Mastodon-class clients also collapse it. Flag follows
the general-edit path (ADR-0001) across domain, both DB backends, REST,
HTML templates, SPA (shadcn), TUI fixtures, and exports.

crates/api-types/src/diary.rs

@@ -20,6 +20,8 @@ pub struct LogReviewRequest {
     #[serde(skip_serializing_if = "Option::is_none")]
     #[schema(value_type = Option<String>)]
     pub watch_medium: Option<domain::value_objects::WatchMedium>,
+    #[serde(default)]
+    pub spoilers: bool,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, utoipa::ToSchema)]
@@ -75,6 +77,8 @@ pub struct EditReviewRequest {
     #[serde(default, skip_serializing_if = "Option::is_none")]
     #[schema(value_type = Option<Option<String>>)]
     pub watch_medium: Option<Option<domain::value_objects::WatchMedium>>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub spoilers: Option<bool>,
 }
 
 fn default_export_format() -> String {

crates/api-types/src/movies.rs

@@ -92,6 +92,8 @@ pub struct ReviewDto {
     #[serde(skip_serializing_if = "Option::is_none")]
     #[schema(value_type = Option<String>)]
     pub watch_medium: Option<domain::value_objects::WatchMedium>,
+    #[serde(default)]
+    pub spoilers: bool,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, utoipa::ToSchema)]
@@ -112,6 +114,7 @@ pub struct MovieStatsDto {
 #[derive(Debug, Clone, Serialize, Deserialize, utoipa::ToSchema)]
 pub struct SocialReviewDto {
     pub user_display: String,
+    pub user_id: Uuid,
     pub rating: u8,
     pub comment: Option<String>,
     pub watched_at: String,
@@ -119,6 +122,8 @@ pub struct SocialReviewDto {
     #[serde(skip_serializing_if = "Option::is_none")]
     #[schema(value_type = Option<String>)]
     pub watch_medium: Option<domain::value_objects::WatchMedium>,
+    #[serde(default)]
+    pub spoilers: bool,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, utoipa::ToSchema)]